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December 19th, 2025 :: 10:11 am CST   

Local Weather Report for
Decatur
Illinois, United States

 Current Decatur Weather Conditions Updated December 19th at 8:54 am 
Overcast
Temperature:19°F Dew Point:10°F
Barometer:29.98 inHg Wind:N 39 Mph
Humidity:66.3% Visibility:0M
 
 Decatur Weather Forecast Summary  
 
Today
Dec 19th
Saturday
Dec 20th
Sunday
Dec 21st
Monday
Dec 22nd
Tuesday
Dec 23rd
Cloudy Cloudy Cloudy Cloudy Cloudy
30°F
46°F
32°F
35°F
26°F
37°F
28°F
50°F
38°F
 
 Decatur Detailed Weather Forecast  
 
Friday, December 19th, 2025
Morning Temperature: 26°F
Cloudy. Windy.
Afternoon Temperature: 27°F
Sunny.
Evening Temperature: 29°F
Cloudy. Windy at times.
Saturday, December 20th, 2025
Overnight Temperature: 34°F
Cloudy. Windy.
Morning Temperature: 42°F
Cloudy. Windy.
Afternoon Temperature: 38°F
Cloudy. Windy at times.
Evening Temperature: 32°F
Clear. Windy at times.
Sunday, December 21st, 2025
Overnight Temperature: 31°F
Clear with cloudy periods. Windy at times.
Morning Temperature: 33°F
Mostly sunny. Windy at times.
Afternoon Temperature: 28°F
Sunny.
Evening Temperature: 27°F
Cloudy.
Monday, December 22nd, 2025
Overnight Temperature: 28°F
Cloudy. Windy at times.
Morning Temperature: 32°F
Cloudy with a slight chance of flurries or showers. Risk of freezing rain. Windy at times.
Afternoon Temperature: 35°F
Cloudy. Windy at times.
Evening Temperature: 37°F
Cloudy. Windy at times.
Tuesday, December 23rd, 2025
Overnight Temperature: 38°F
Cloudy.
Morning Temperature: 46°F
Cloudy.
Afternoon Temperature: 44°F
A mix of cloud and sun.
Evening Temperature: 41°F
Cloudy.
Wednesday, December 24th, 2025
Overnight Temperature: 38°F
A mix of cloudy and clear skies.
Morning Temperature: 48°F
Cloudy. Windy at times.
Afternoon Temperature: 52°F
Cloudy.
Evening Temperature: 57°F
Cloudy with a chance of showers. Windy at times.
Thursday, December 25th, 2025
Overnight Temperature: 59°F
Cloudy with a slight chance of showers. Windy at times.
Morning Temperature: 62°F
Cloudy. Wind 20 to 30 mph.
Afternoon Temperature: 68°F
A mix of cloud and sun. Wind 20 to 30 mph.
Evening Temperature: 63°F
Clear. Windy.
Friday, December 26th, 2025
Overnight Temperature: 52°F
Cloudy. Windy at times.
Morning Temperature: 53°F
Cloudy.
Afternoon Temperature: 52°F
Cloudy.
Evening Temperature: 50°F
A mix of cloudy and clear skies.
Saturday, December 27th, 2025
Overnight Temperature: 50°F
Cloudy.
Morning Temperature: 55°F
Cloudy.
Afternoon Temperature: 52°F
Cloudy.
Evening Temperature: 49°F
Cloudy.





 

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This WeatherCity Weather Forecast for Decatur, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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